68
• Faults with error messages
3110086 EHC20 UK 110515
Fuses
T2 A / 250 V
Circuit board
Electronic
relays
Mechanical
relays
Q.2
Maintenance
As part of the general annual maintenance for your heating system, you should have the controller
functions checked by a specialist and have your settings optimised if necessary.
•
Maintenance procedures:
•
Checking the time and date (see “6.11 Time and date”, page 65)
•
Assessing the statistics and carrying out a plausibility check (see “2. Statistics”, page 47 )
•
Checking the error memory (see “2.4 Messages”, page 47)
•
Assessing the current measurements and carrying out a plausibility check (see “1. Measurements”, page
46)
•
Checking the switch outputs/loads in manual mode (see “3.2 Manual”, page 48)
•
If necessary, optimizing the parameters set
